SPDYInterceptor.java

/* Copyright 2015 predic8 GmbH, www.predic8.com

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License. */
package com.predic8.membrane.core.interceptor.tunnel;

import com.predic8.membrane.annot.MCAttribute;
import com.predic8.membrane.annot.MCElement;
import com.predic8.membrane.core.exchange.Exchange;
import com.predic8.membrane.core.interceptor.AbstractInterceptor;
import com.predic8.membrane.core.interceptor.Outcome;
import com.predic8.membrane.core.util.URLUtil;

/**
 * @description Allow HTTP protocol upgrades to the <a
 *              href="https://www.chromium.org/spdy/spdy-protocol/spdy-protocol-draft3-1">SPDY protocol</a>.
 *              After the upgrade, the connection's data packets are simply forwarded
 *              and not inspected.
 * @default false
 */
@MCElement(name = "spdy")
public class SPDYInterceptor extends AbstractInterceptor {

	@Override
	public Outcome handleRequest(Exchange exc) throws Exception {
		if ("SPDY/3.1".equalsIgnoreCase(exc.getRequest().getHeader().getFirstValue("Upgrade"))) {
			exc.setProperty(Exchange.ALLOW_SPDY, Boolean.TRUE);
		}
		return Outcome.CONTINUE;
	}
}